<template>
  <div class="main">
    <el-form ref="ruleFormRef" :model="ruleForm" status-icon :rules="rules" label-width="auto">
      <el-form-item label="Password" prop="pass">
        <el-input v-model="ruleForm.pass" type="password" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="Confirm" prop="checkPass">
        <el-input v-model="ruleForm.checkPass" type="password" autocomplete="off"/>
      </el-form-item>
      <el-form-item label="Age" prop="age">
        <el-input v-model.number="ruleForm.age"/>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="submitForm(ruleFormRef)">
          Submit
        </el-button>
        <el-button @click="resetForm(ruleFormRef)">Reset</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script lang="ts" setup>
import { reactive, ref } from "vue";
import type { FormInstance, FormRules } from "element-plus";

const ruleFormRef = ref<FormInstance>();

const checkAge = (rule: any, value: any, callback: any) => {
  if (!value) {
    return callback(new Error("Please input the age"));
  }
  setTimeout(() => {
    if (!Number.isInteger(value)) {
      callback(new Error("Please input digits"));
    } else {
      if (value < 18) {
        callback(new Error("Age must be greater than 18"));
      } else {
        callback();
      }
    }
  }, 1000);
};

const validatePass = (rule: any, value: any, callback: any) => {
  if (value === "") {
    callback(new Error("Please input the password"));
  } else {
    if (ruleForm.checkPass !== "") {
      if (!ruleFormRef.value) return;
      ruleFormRef.value.validateField("checkPass");
    }
    callback();
  }
};
const validatePass2 = (rule: any, value: any, callback: any) => {
  if (value === "") {
    callback(new Error("Please input the password again"));
  } else if (value !== ruleForm.pass) {
    callback(new Error("Two inputs don't match!"));
  } else {
    callback();
  }
};

const ruleForm = reactive({
  pass: "",
  checkPass: "",
  age: "",
});

const rules = reactive<FormRules<typeof ruleForm>>({
  pass: [{validator: validatePass, trigger: "blur"}],
  checkPass: [{validator: validatePass2, trigger: "blur"}],
  age: [{validator: checkAge, trigger: "blur"}],
});

const submitForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  formEl.validate((valid) => {
    if (valid) {
      console.log("submit!");
    } else {
      console.log("error submit!");
    }
  });
};

const resetForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return;
  formEl.resetFields();
};
</script>
<style scoped>
.main {
  @apply flex h-screen items-center justify-center;
}
</style>
